Battery relocation

Hope everyone is having a great week!

I am still trying to complete the wiring for the battery relocation. Did move the battery to the trunk.

Do have some questions, hope you can help me. I see in the schematic that "one wire alternator" is needed, currently, I have a different alternator. Do not know if I can use this alternator. Wanted to ask before I go and purchase the one wire alternator.

Do all the wires have to be a 1- gauge size? Or a smaller wire size can be used for some of the connections?

I was told that I needed to take my car for an inspection and for that reason, I just connected the battery to the same cables as before. Took the car to be inspected, but the VIN number was all that was needed, to verify the car was not stolen. Have not driven the car ever since, needs brakes and other work.

Pictures of the schematic, it is from one FABO's member. The way I have the battery connected. The alternator that the car has. Thank you for your help.

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